EPA faces lawsuit over power plant rollback

By Ellie Borst | 03/30/2026 01:18 PM EDT

A coalition of health and green groups filed a petition to defend Biden-era standards for mercury and other toxic emissions.

Smokestack emissions are seen at the Jeffrey Energy Center coal-fired power plant near Emmett, Kansas.

Smokestack emissions from a coal-fired power plant in Kansas. The Mercury and Air Toxics Standards regulate hazardous air pollutants from coal- and oil-fired power plants. Charlie Riedel/AP

Roughly two dozen health and environmental groups are suing EPA over its decision to repeal a Biden-era rule targeting mercury air emissions from some coal-fired power plants.

A petition filed Monday in the U.S. Court of Appeals for the District of Columbia Circuit challenges the Trump administration’s decision to repeal regulations on plants burning lignite, a low-grade type of coal, raising air emissions to more than three times higher than other coal-fueled operations.

“Federal safeguards that have significantly lowered levels of mercury, arsenic, lead and other toxic air pollutants have proven to be a success story for public health and the environment,” Deborah Murray, senior attorney for the Southern Environmental Law Center, said in a statement.

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The law center represents leading health organizations, including the Counsel for American Academy of Pediatrics, the American Lung Association, the American Public Health Association and Physicians for Social Responsibility.